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Equilibrium Studies on Complexation of Iron (III) by Acet-, Glycinium and Betaine Hydroxamic Acids

Mladen Biruš ; Department of Chemistry, Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia, Yugoslavia
Nikola Kujundžić ; Department of Chemistry, Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia, Yugoslavia
Marijan Pribanić ; Department of Chemistry, Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia, Yugoslavia
Zvonimir Tabor ; Department of Chemistry, Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia, Yugoslavia

Puni tekst: engleski, pdf (5 MB) str. 313-324 preuzimanja: 118* citiraj
APA 6th Edition
Biruš, M., Kujundžić, N., Pribanić, M. i Tabor, Z. (1984). Equilibrium Studies on Complexation of Iron (III) by Acet-, Glycinium and Betaine Hydroxamic Acids. Croatica Chemica Acta, 57 (3), 313-324. Preuzeto s https://hrcak.srce.hr/194147
MLA 8th Edition
Biruš, Mladen, et al. "Equilibrium Studies on Complexation of Iron (III) by Acet-, Glycinium and Betaine Hydroxamic Acids." Croatica Chemica Acta, vol. 57, br. 3, 1984, str. 313-324. https://hrcak.srce.hr/194147. Citirano 26.09.2020.
Chicago 17th Edition
Biruš, Mladen, Nikola Kujundžić, Marijan Pribanić i Zvonimir Tabor. "Equilibrium Studies on Complexation of Iron (III) by Acet-, Glycinium and Betaine Hydroxamic Acids." Croatica Chemica Acta 57, br. 3 (1984): 313-324. https://hrcak.srce.hr/194147
Harvard
Biruš, M., et al. (1984). 'Equilibrium Studies on Complexation of Iron (III) by Acet-, Glycinium and Betaine Hydroxamic Acids', Croatica Chemica Acta, 57(3), str. 313-324. Preuzeto s: https://hrcak.srce.hr/194147 (Datum pristupa: 26.09.2020.)
Vancouver
Biruš M, Kujundžić N, Pribanić M, Tabor Z. Equilibrium Studies on Complexation of Iron (III) by Acet-, Glycinium and Betaine Hydroxamic Acids. Croatica Chemica Acta [Internet]. 1984 [pristupljeno 26.09.2020.];57(3):313-324. Dostupno na: https://hrcak.srce.hr/194147
IEEE
M. Biruš, N. Kujundžić, M. Pribanić i Z. Tabor, "Equilibrium Studies on Complexation of Iron (III) by Acet-, Glycinium and Betaine Hydroxamic Acids", Croatica Chemica Acta, vol.57, br. 3, str. 313-324, 1984. [Online]. Dostupno na: https://hrcak.srce.hr/194147. [Citirano: 26.09.2020.]

Sažetak
EquHtbri1um studies were performed to invest:iga.te ithe com-
1plexa1tion of aqueous high-spin irnn(!I!) by three synthetic
monohydroxamic actds: acet-, glycin.ium, and be1ta1ne hydroxamic
acids. Under neutral and acidic conditions studied,
1acethydroxamic acid is neutral (AH), while glycinium CGH2+)
a.nd betaine CBH+) hydroxa.mic ac1ds have a positive charge
on ·the nitro:gen atom.
The equilibrium quotients ·for the formation of monoacethydroxamatoiron(
I!!) complex Qi', A-= [FeA2+J/( [Fe3+] [A- J ),
bisacethydroxamatoiroin(III) complex Q2', A-= [FeA2+J/( [Fe3+]
[A-]2), a.nd .tirisacethydroxamatoiiron(!I!) comp;lex Q3', A-=
= [FeA3]/([Fe3+J [A-]3) were found to be: lg Qi', A-= 10.38
(0.01), lg Q2', A-= 19.16 (0.14), and lg Q3', A- = 25.56 (0.70).
Ana.logous equiUbrimn quotients for glycinium-hydrnxamic
acid with protonated amino group (GH2+) and betaine-hydroxamic
ac·id CBH+) ligands are:
lg Qi', GH = [Fe(GH)3+J/([Fe3+J [GHJ) = 7.77 (0.08),
lg Q2', GH = [Fe(GH)i3+J/([Fe3+J [GHJ2) = 13.71 (0.08),
lg QJ', GH = [Fe.CGH)J3+]/([Fe3+J [GHJ3) = 17.63 (0.14),
lgQi',B = [FeB3+]/([Fe3+) [BJ)= 7.28 (0.02),
lgQ2',B = [FeB23+J/([Fe3+] [B]2) = 13.41 (0.05), and
lgQ3'.B = [FeB33+]/([Fe3+) [B]3) = 16.46 (0.24).
Determinations were made at 1.0 M ionic strength (NaCD
and at 25 °C by spectrophotometric methods.
The synthesis of a new compound beatine hydroxamic acid
chloride i1s desc·ri:bed.
INTRODUCTION

Hrčak ID: 194147

URI
https://hrcak.srce.hr/194147

Posjeta: 161 *